An implement includes a hydraulic control to move rear wheels upward and downward. A hitch frame has a rear end pivotally connected to a front of the implement's frame about an upper hitch pivot axis and a front end connectable to a tractor drawbar. A tension link has a rear end pivotally connected to the front end of the implement about a lower hitch pivot axis located below and parallel to the upper hitch pivot, and a front end movably mounted to a front of the hitch frame. A front hydraulic cylinder moves the front end of the tension link forward and rearward. The hydraulic control activates the front hydraulic cylinder to move the tension link rearward as the rear hydraulic cylinder moves the rear wheels upward with respect to the implement frame, and to move the front end of the tension link forward as the rear wheels move downward.